Home / 15,017.74-20,716.28-9,045.78

Finding the Fourth Proportional to 15,017.74, 20,716.28 and 9,045.78

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Solution

The fourth proportional to 15,017.74, 20,716.28 and 9,045.78 is: 12,478.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.74 : 20,716.28 = 9,045.78 : x
  2. Step 2: Convert to fraction form
    15,017.74/20,716.28 = 9,045.78/x
  3. Step 3: Cross multiply
    15,017.74x = 20,716.28 × 9,045.78
  4. Step 4: Simplify right side
    15,017.74x = 187,394,911.30
  5. Step 5: Solve for x
    x = 187,394,911.30/15,017.74
  6. Step 6: Final answer
    x = 12,478.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.